<!DOCTYPE html>
<html style="width: 100%;height: 100%;margin: 0;padding: 0">
<head>
<meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1">
    <meta name="format-detection" content="telephone=no">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta http-equiv="Expires" content="0">
    <meta http-equiv="Cache-Control" content="no-cache">
    <meta http-equiv="Pragma" content="no-cache">
    <link rel="stylesheet" type="text/css" href="./upload.css">
    <title>上传身份证</title>

    <script type="text/javascript" src="event.js"></script>
    <script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<!--<script type="text/javascript" src="jquery.js"></script>-->
    <script language="javascript">

/**
* 从 file 域获取 本地图片 url
*
*/
function getFileUrl(sourceId) {
var url;
console.log(navigator.userAgent);
if (navigator.userAgent.indexOf("MSIE")>=1) { // IE
url = document.getElementById(sourceId).value;
} else if(navigator.userAgent.indexOf("Firefox")>0) { // Firefox
url = window.URL.createObjectURL(document.getElementById(sourceId).files.item(0));
} else if(navigator.userAgent.indexOf("Chrome")>0) { // Chrome
url = window.URL.createObjectURL(document.getElementById(sourceId).files.item(0));
}
return url;
}

    $(function(){
  form.reset(); //清除浏览器记录的上次记录
  var file;
  $(form).on("change","#file_upload",function(){

            // alert("call back")
            var $file = $(this);
            var fileObj = $file[0];
            var windowURL = window.URL || window.webkitURL;
            var dataURL;
            var $img = $("#preview");
 
            if(fileObj && fileObj.files && fileObj.files[0]){
                
                dataURL = windowURL.createObjectURL(fileObj.files[0]);
                //dataURL = getFileUrl('file_upload');;                
                //console.log(" upload:"+dataURL+"    file:"+fileObj.files[0]);
                $img.attr('src',dataURL);
            }else{
                 console.log("else  upload");
                dataURL = $file.val();
 
                
 
                var imgObj = document.getElementById("preview");
                // 两个坑:
                // 1、在设置filter属性时，元素必须已经存在在DOM树中，动态创建的Node，也需要在设置属性前加入到DOM中，先设置属性在加入，无效；
                // 2、src属性需要像下面的方式添加，上面的两种方式添加，无效；
                imgObj.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)";
                imgObj.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = dataURL;
 
            }
    //输出选中结果
    console.log(this.value);
    //每次选中都保存旧元素，并使用新的控件替换
    $(this).clone().replaceAll(file=this);
  }).submit(function(){
    //提交时把之前保存的旧元素替换回去
    $("#file_upload").replaceWith(file);
  });
});







    </script>

</head>
<body style="width: 100%;height: 100%;margin: 0;padding: 0">
        <div id="div_id" style="width: 100% ; height:100%;border: 1px ;background:#000000 ; margin: 0px;">
            <!-- 头部nav -->
            <div id="nav" style="width: 100%; height: 10%;background: #f9f9f9;padding-top: 0px ;position: absolute;padding: 0px">
                
                <div style="width: 200px;height: 100px; position:relative;left: 50%;top: 50%;margin-left: -100px;margin-top: -50px;overflow: hidden;">
                    
                     <font color="#000" ><h4 style="text-align:center;line-height: 50px;">请上传身份证</h4> </font>

                </div>


                <div style="width: 100%;height: 1px;background: #c6c6c6;position: relative;margin-top: -50px;top: 99%">
                    
                     
                </div>
               
               
            </div>

            <!-- body -->
            <div id="content" style="width: 100%; height: 90% ; background: #ebebeb ;position: absolute;top: 10%;">
                 

                 <div style="margin: 0 auto;width: 60%;height: 40%;border:3px solid #41a0f2;margin-top: 50px;overflow: hidden;">

                     <img id="preview" src="./id.png" style="display: block;margin: 0 auto;height:90px;width: 153px;margin-top: 20px">
                         
                     </img>   
                     <p class="fontBlue ta-c mt5" style="text-align: center;">上传身份证</p>

                    <a  href="javascript:;" class="file" style="display: block;margin: 0 auto;width: 150px;height: 30px;text-align: center;line-height: 30px">选择文件
                        <form id="form">
                         <input id="file_upload" type="file" name="" id="">
                         </form>
                    </a>

                 </div>
                 <div>
                     
                 </div> 

            </div>    


        </div>

        

</body>
</html>